<script setup lang="ts">
import { getHotList } from '@/api/hot'
import type { customRequset, HotParams, HotSubType, HotResult } from '@/types/hot'
import { ref } from 'vue'
// 热门推荐页 标题和url
const hotMap = [
  { type: '1', title: '特惠推荐', url: '/hot/preference' },
  { type: '2', title: '爆款推荐', url: '/hot/inVogue' },
  { type: '3', title: '一站买全', url: '/hot/oneStop' },
  { type: '4', title: '新鲜好物', url: '/hot/new' },
]

const query = defineProps<{
  type: string
}>()
// 获取当前的推荐信息
const currentHot = hotMap.find((item) => item.type === query.type)

// 动态设置页面标题
uni.setNavigationBarTitle({
  title: currentHot!.title,
})
const params: customRequset<HotParams> = {
  url: currentHot!.url,
  data: { page: 32, pageSize: 10 },
}

// banner图片
const bannerPicture = ref('')
// 类型数据
const subTypes = ref<HotSubType[]>([])
getHotList(params).then((res) => {
  bannerPicture.value = res.result.bannerPicture
  subTypes.value = res.result.subTypes
})

// 菜单高亮下标
const activeIndex = ref(0)

// 触底加载完成标记
const isFinished = ref(false)
// 触底加载更多
const onLoadindGoods = () => {
  // 获取当前选项类型
  const currentSubType = subTypes.value[activeIndex.value]
  console.log(currentSubType, isFinished)
  if (currentSubType.goodsItems.page < currentSubType.goodsItems.pages) {
    currentSubType.goodsItems.page++
  } else {
    isFinished.value = true
    // 退出并轻提示
    return uni.showToast({ icon: 'none', title: '没有更多数据了~' })
  }

  const params: customRequset<HotParams> = {
    url: currentHot!.url,
    data: {
      page: currentSubType.goodsItems.page,
      pageSize: currentSubType.goodsItems.pageSize,
      subType: currentSubType.id,
    },
  }
  getHotList(params).then((res) => {
    // 获取最新数据
    const newVal = res.result.subTypes[activeIndex.value].goodsItems.items
    // 追加到原先的数据
    subTypes.value[activeIndex.value].goodsItems.items.push(...newVal)
  })
}

const changeTab = (index: number) => {
  isFinished.value = false
  activeIndex.value = index
  params.data.page = 32
  getHotList(params).then((res) => {
    bannerPicture.value = res.result.bannerPicture
    subTypes.value = res.result.subTypes
  })
}
</script>

<template>
  <view class="viewport">
    <!-- 推荐封面图 -->
    <view class="cover">
      <image :src="bannerPicture"></image>
    </view>
    <!-- 推荐选项 -->
    <view class="tabs">
      <text
        v-for="(item, index) in subTypes"
        class="text"
        :class="[activeIndex === index ? 'active' : '']"
        @tap="changeTab(index)"
        :key="item.id"
      >
        {{ item.title }}</text
      >
    </view>
    <!-- 推荐列表 -->
    <scroll-view @scrolltolower="onLoadindGoods" scroll-y class="scroll-view">
      <view
        class="goods"
        v-for="(item, index) in subTypes"
        :key="item.id"
        v-show="index === activeIndex"
      >
        <navigator
          hover-class="none"
          class="navigator"
          v-for="good in item.goodsItems.items"
          :key="good.id"
          :url="`/pages/goods/goods?id=`"
        >
          <image class="thumb" :src="good.picture"></image>
          <view class="name ellipsis">{{ good.name }}</view>
          <view class="price">
            <text class="symbol">¥</text>
            <text class="number">{{ good.price }}</text>
          </view>
        </navigator>
      </view>
      <view class="loading-text">{{ isFinished ? '没有更多数据啦~~~' : '正在加载...' }}</view>
    </scroll-view>
  </view>
</template>

<style lang="scss">
page {
  height: 100%;
  background-color: #f4f4f4;
}
.viewport {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: 180rpx 0 0;
  position: relative;
}
.cover {
  width: 750rpx;
  height: 225rpx;
  border-radius: 0 0 40rpx 40rpx;
  overflow: hidden;
  position: absolute;
  left: 0;
  top: 0;
}
.scroll-view {
  flex: 1;
}
.tabs {
  display: flex;
  justify-content: space-evenly;
  height: 100rpx;
  line-height: 90rpx;
  margin: 0 20rpx;
  font-size: 28rpx;
  border-radius: 10rpx;
  box-shadow: 0 4rpx 5rpx rgba(200, 200, 200, 0.3);
  color: #333;
  background-color: #fff;
  position: relative;
  z-index: 9;
  .text {
    margin: 0 20rpx;
    position: relative;
  }
  .active {
    &::after {
      content: '';
      width: 40rpx;
      height: 4rpx;
      transform: translate(-50%);
      background-color: #27ba9b;
      position: absolute;
      left: 50%;
      bottom: 24rpx;
    }
  }
}
.goods {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  padding: 0 20rpx 20rpx;
  .navigator {
    width: 345rpx;
    padding: 20rpx;
    margin-top: 20rpx;
    border-radius: 10rpx;
    background-color: #fff;
  }
  .thumb {
    width: 305rpx;
    height: 305rpx;
  }
  .name {
    height: 88rpx;
    font-size: 26rpx;
  }
  .price {
    line-height: 1;
    color: #cf4444;
    font-size: 30rpx;
  }
  .symbol {
    font-size: 70%;
  }
  .decimal {
    font-size: 70%;
  }
}

.loading-text {
  text-align: center;
  font-size: 28rpx;
  color: #666;
  padding: 20rpx 0 50rpx;
}
</style>
